CVE-2025-8842— NASM Netwide Assember preproc.c do_directive use after free
Quick assessment
Affected
NASM Netwide Assember
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
NASM Netwide Assember是NASM团队的一款汇编器和反汇编器。 NASM Netwide Assember 2.17rc0版本存在安全漏洞，该漏洞源于文件preproc.c中函数do_directive存在释放后重用问题。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2025-8842
Vulnerability Information
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Vulnerability Title
NASM Netwide Assember preproc.c do_directive use after free
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
NASM Netwide Assember 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NASM Netwide Assember是NASM团队的一款汇编器和反汇编器。 NASM Netwide Assember 2.17rc0版本存在安全漏洞，该漏洞源于文件preproc.c中函数do_directive存在释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| NASM | Netwide Assember | 2.17rc0 | - |
|
II. Public POCs for CVE-2025-8842
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · NASM · 2025-08-11 · 5 CVEs total
| CVE-2025-8843 | 5.3 MEDIUM | NASM Netwide Assember outmacho.c macho_no_dead_strip heap-based overflow |
| CVE-2025-8845 | 5.3 MEDIUM | NASM Netwide Assember nasm.c assemble_file stack-based overflow |
| CVE-2025-8846 | 5.3 MEDIUM | NASM Netwide Assember parser.c parse_line stack-based overflow |
| CVE-2025-8844 | 3.3 LOW | NASM Netwide Assember preproc.c parse_smacro_template null pointer dereference |
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Same product: Netwide Assember
Same weakness: CWE-416
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V. Comments for CVE-2025-8842
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